Impeovsment in mechanical poweb



tetes difetti @with IJ. W. SAPI), M. D., GF CLEVELAND, OHIO.

Letters Patent No. 68,314, dated August 2, 186 7.

IMPROVEMENT IN MEGHANIGAI. POWER APPLIED T0 SEWING MACHINES.

T() ALL WHOM IT MAY CONOERN Be it known that I, L. W. SAPP, ot' Cleveland.l in the county of Cuyahoga, and State of Ohio, have invented certain new and useful improvements in Sewing Machines; and I do hereby declare that the following is a ful and com-plete description of the same, reference being had to the accompanying drawings, making a partei' this specification, in which Figure I is an end view ot' the machine.

Figure 2,' a detached side views.

Figure 3 is a detached section.

Like letters of reference refer to like parts in the views.

In g. 1, A represents a table, on which is placed and secured an ordinary sewing machine, B,Ia detached section of which only being shown, and of which C is the driving-wheel, by which the appara-tus is run by the following machinery: D is a case, in which is arranged the coiled spring E, tig. 3, mounted upon the spindle F. The outer end of said spring is connected to the G, and is wound up by the finger-screw or key II, iig. 2. On the spindle F is also a cog-wheel, I, which is made. to engage in opinion indicated by the dotted -lines J, fig. 3. This pinion gives motion to the cog-wheel K, which in turn engages in the 'pinion L on the shaft M, and thereby communicates motion to the governor O, iig. 2, by which the speed of the machine is regulated, as will hereafter he shown. P is a pulley connected to the wheel Q by a band, R, and by which the machine is driven as follows, viz: on winding up the machine, by means of the key referred to, the machinery is thereby put in motion, which,by its connection to the sewing machine, puts italse in motion, and thus obviates the necessity of using the foot or hand of the operator for driving the machine. By this device much labor is saved the operator, thereby enabling him to give his undivided attention and power to the work, and thus accomplish more and hetter results. `By the application of the governor O, which may be placed in a horizontal or vertical position to this apparatus, the speed and operation of the same are regulated as follows:

As the balls S are made to i'ly apart by their velocity the shoulders T oi' the halbarm, which it will be observed are on the opposite side of the pivots or inici-um a by .which the arms are attached to the cross-head b, will be made to press against the sides of the case, and thus by the induced friction canse a retardation of the velocity and revolution of the balls, and thereby check the speed of the machine more or loss according to the pressure exerted by the shoulder on the side of the case. The machine may be brought to a full stop hy the application ofthe brake, which consists of a spring, e, lig. I, the free end of which is n'mde to act upon the periphery ei' the wheel d keyed to the governoreshaft by means of the screw e attached to the spring, und adjusted nut By this means the brake can be applied at the will of' the operator so-as to control the more ments or operation ot" the machine.

What I claim as my improvement, and desire to secure by Letters Patent, is-

The driving mechanism, provided with controlling and regulating devices, constructed, arranged, and couibined with a sewing machine, substantially as and for the purpose set Forth.

L. W. SAPI, M. l).

Witnesses:

J. H. Bimnincu, FRAM; S. ALDEA'. 

